From 91a120d03fd901fc8b95e85af7903358c5862d65 Mon Sep 17 00:00:00 2001 From: Jesper Nilsson <jesper.nilsson@axis.com> Date: Thu, 11 Jun 2009 19:09:00 +0200 Subject: CRISv32: Fix potential null reference in cryptocop driver. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The code didn't test the pointer to the newly allocated memory, but a parameter sent in as value. Since the input parameter was most often set, the code would have used a null pointer if the kmalloc failed. If the input parameter was not set, the code would leak the allocated buffer. http://bugzilla.kernel.org/show_bug.cgi?id=11363 Reported-by: Daniel Marjamäki <danielm77@spray.se> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> --- arch/cris/arch-v32/drivers/cryptocop.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/cris/arch-v32/drivers/cryptocop.c b/arch/cris/arch-v32/drivers/cryptocop.c index 67c61ea86813..fd529a0ec758 100644 --- a/arch/cris/arch-v32/drivers/cryptocop.c +++ b/arch/cris/arch-v32/drivers/cryptocop.c @@ -1395,7 +1395,7 @@ static int create_md5_pad(int alloc_flag, unsigned long long hashed_length, char if (padlen < MD5_MIN_PAD_LENGTH) padlen += MD5_BLOCK_LENGTH; p = kmalloc(padlen, alloc_flag); - if (!pad) return -ENOMEM; + if (!p) return -ENOMEM; *p = 0x80; memset(p+1, 0, padlen - 1); @@ -1427,7 +1427,7 @@ static int create_sha1_pad(int alloc_flag, unsigned long long hashed_length, cha if (padlen < SHA1_MIN_PAD_LENGTH) padlen += SHA1_BLOCK_LENGTH; p = kmalloc(padlen, alloc_flag); - if (!pad) return -ENOMEM; + if (!p) return -ENOMEM; *p = 0x80; memset(p+1, 0, padlen - 1); -- cgit v1.2.3